一、巧妙设问,引导质疑上课铃响后,教师的首要任务是把学生的心拉进课堂,教师可以通过设计一些巧妙的、能调动学生学习积极性的问题引起学生注意。如在教学“解比例”时,我首先复习“比例”的基本性质,即两个内项的乘积等于两个外项的乘积,让学生根据该性质各写一个比例,然后用多媒体出示比例25:50=5:10。接着提问:同学们,刚才我在写比例时不小 First, clever questioning, to guide the question After the bell, the teacher’s primary task is to pull the heart of the students into the classroom, the teacher can design some clever, can arouse students’ enthusiasm for learning to attract students attention. For instance, in teaching “solution ratio”, I first review the basic property of “ratio”, that is, the product of two internal terms is equal to the product of two external terms, so that students can write a ratio according to the nature and then use Multimedia presentation ratio 25:50 = 5:10. Then ask: my classmates, just when I was writing the ratio is not small